Document
S-25C320A/640A
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SPI SERIAL E2PROM
Rev.4.2_02_H
The S-25C320A/640A is a SPI serial E2PROM which operates at high speed, with low current consumption and the wide range operation. The S-25C320A/640A has the capacity of 32 K-bit and 64 K-bit, and the organization is 4096 words × 8-bit, 8192 words × 8-bit. Page write and sequential read are available.
Features
• Operating voltage range:
Read 1.6 V to 5.5 V Write 1.7 V to 5.5 V
• Operation frequency • Write time: • SPI mode (0, 0) and (1, 1) • Page write: • Sequential read • Write protect: Protect area:
5.0 MHz (VCC = 2.5 V to 5.5 V) 5.0 ms max.
32 bytes / page
Software, Hardware 25%, 50%, 100%
• Monitors Write to the memory by a status register • Function to prevent malfunction by monitoring clock pulse • Write protect function during the low power supply voltage
• CMOS schmitt input ( CS , SCK, SI, WP , HOLD )
• Endurance: • Data retention.